Filmed at The Pit underground cenote in the Dos Ojos park near Tulum in Mexico.

A cenote is Mayan for an inland opening into the underground fresh water river system. The Mayans thought them sacred.

The cloud layer you see in the film is at about 27m and is Hydrogen Sulphate.

-- Update

Since we put this film up, Jarrod suffered a fatal diving accident in Australia. The limited time I spent with him was enough to know the wonderful person he was.

He will be sorely missed by everyone who was fortunate enought to have known him.

In memory of Jarrod, may you rest in peace.

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